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Barium titanate formation by organic resins formed with mixed citrate

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Abstract

Citric precursors are used to produce BaTiO3, the Ba/Ti ratio being fixed by a mixed Ba-Ti citrate. The conditions for its solubility in organic agents (ethylene glycol or ethylene glycol+ citric acid) has been studied and used to investigate various routes of synthesis (resin, spray pyrolysis or films). The transformation from the resin to the mineral phase has been investigated. In all cases the powders are aggregates of 150 nm. Their structure is cubic or tetragonal depending upon the route followed and they are at the limit of a structural metastability. Sintering may be accomplished below 1250 °C if the 150 nm aggregates are properly arranged. This depends upon the route chosen to produce them.

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Coutures, J.P., Odier, P. & Proust, C. Barium titanate formation by organic resins formed with mixed citrate. J Mater Sci 27, 1849–1856 (1992). https://doi.org/10.1007/BF01107212

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Keywords

  • Polymer
  • Ethylene
  • Citrate
  • Titanate
  • Ethylene Glycol